OBJECTIVE:To prepare and characterize capreomycin sulfate liposomes(CSL).METHODS:Capreomycin sulfate was entrapped into liposomes using active loading that pH gradient methods,ammonium sulfate gradient methods and sodium acetate gradient methods respectively followed by lyophilization technique.The liposome was characterized by entrapment efficiency,particle size,? potential and the stability.RESULTS:The entrapment efficiency of CSL pre-and post-lyophilization prepared by three methods were 65.7% and 65.2 %,20.1% and 18.6%,34.6% and 32.4%,with particle size of 136 and 145 nm,144 and 153 nm,142 and 159 nm,? potential of —20.2 and —19.5 mV,—24.4 and —22.9 mV,—18.7 and —17.8 mV respectively.No obvious changes were found in all the indexes in the stability test.CONCLUSIONS:The pH gradient technique is suitable for preparing CSL in 3 kinds of methods.

[Objective]To explore the pathogenesis of lung cancer from the perspective of Xuanfu,and to analyze the theoretical basis and clinical significance of YE Tianshi's acrid theory in the treatment of lung cancer.[Methods]According to the theory of Xuanfu,this paper discussed its influence on the occurrence,development and metastasis of lung cancer from three aspects:the loss of opening and closing of Xuanfu,the loss of"Xuanfu-collaterals"and the loss of"Xuanfu Qi-liquid".By reading YE Tianshi's A Guide to Clinical Practice with Medical Records,YE Tianshi's"acrid"theory and its differentiation and treatment experiences for cancer were summarized,and demonstrated it with a medical record.[Results]Xuanfu opening and closing loss,collaterals loss,Qi and liquid loss,the body's healthy Qi deficiency,Qi stagnation,blood stasis,phlegm and toxin interaction,led to the occurrence and development of lung cancer;YE Tianshi was good at using acrid drugs in the treatment of cancer,and advocated that acrid drugs could dispel wind,move Qi,dissolve phlegm,break concretions and tonify deficiency.In the elderly patients mentioned in the medical records,lung cancer recurred due to deficiency of Qi and stagnation of Xuanfu,phlegm and blood stasis.Therefore,the treatment of acridity was given,and lung cancer was alleviated.[Conclusion]YE Tianshi's"acrid"theory is suitable for different stages of lung cancer treatment by regulating the opening and closing of Xuanfu,which is worthy of clinical promotion.